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Afla nr. necunoscut :
849+150-736+904-j=504


Răspuns :

999-736+904-j=504
263+904-j=504
1167-j=504
j=1167-504
j=663

849+150-736+904-j=504 999-736+904-j=504 263+904-j=504 1167-j=504 j=1167-504 j=663